SOLUTION: average=1000 standard deviation=300 randomly selected=50 what is the probability that the mean is greater than 1100

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Question 350625: average=1000
standard deviation=300
randomly selected=50
what is the probability that the mean is greater than 1100
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Find the z-score.
z=%28x-mu%29%2Fsigma=%281100-1000%29%2F300
z=0.3333
P%28z%29=0.63056
So then
P%28x%3E1100%29=1-0.63056=0.36944